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The Wilkins ZW4000G-P is a UL-listed Pressure-Tru™ fire hose pressure reducing standpipe valve for CLASS I and III systems, regulating under flow and no-flow.

Key Specifications:

• Size: 2 1/2 Inches
• Maximum Inlet Pressure: 360 psi
• Maximum Outlet Pressure: 175 psi
• Notable Certifications: UL Listed, C-UL Listed
• Connection Type: Grooved inlet, male hose outlet

Other Related Variants:

• ZW4000G-Q: 310 psi maximum inlet pressure version
• ZW4000G-R: 290 psi maximum inlet pressure version
• ZW4000G-S: 250 psi maximum inlet pressure version
• ZW4000G-T: 225 psi maximum inlet pressure version
• ZW4000G-U: 200 psi maximum inlet pressure version

Materials:

• Cast bronze body (ASTM B 584)
• Buna Nitrile elastomers (FDA approved)
• EPDM elastomers (FDA approved)

Typical Installation:

The Zurn ZW4000G-P is designed for individual hose stations in CLASS I and CLASS III fire protection systems, providing reliable pressure reduction under both flow and no-flow conditions.

Standards Compliance:

UL Listed; C-UL Listed; NYC MEA 325-06-E; City of Los Angeles Approved; AWWA C606; NFPA 1963; ANSI B1.20.1

Features & Benefits:

• Dual Condition Regulation: Regulates pressure under both flow and no-flow conditions for consistent fire protection performance.
• Durable Construction: Cast bronze body with FDA-approved elastomers ensures long-lasting reliability in demanding fire protection applications.
• Easy Monitoring: Tapped and plugged inlet and outlet ports allow for convenient pressure gauge installation and system monitoring.
• UL Listed Safety: Fully certified for fire protection applications with UL and C-UL listings ensuring compliance with fire safety standards.

FAQ

Q: What is the maximum inlet pressure for the ZW4000G-P model?

A: The Wilkins ZW4000G-P (bonnet type P) has a maximum inlet pressure rating of 360 psi to ensure a maximum outlet pressure of 175 psi.

Q: What type of connection does the ZW4000G-P use?

A: The Zurn ZW4000G-P features a grooved inlet connection per AWWA C606 standard and a male hose outlet per NFPA 1963 standard.

Q: Can the valve be tested at higher pressures during hydrostatic testing?

A: Yes, the inlet side of the valve can be safely tested up to 400 psi during system hydrostatic leak tests.

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